Boiler-lug and method of making the same



(No Model.)

v G. L. MOGREGOR. BOILER we AND METHOD OF MAKING THE SAME. No. 479,331

Patented July 19, 1892.

1527/672%w, GeoryeQ/T Gregor,

UNTTED STATES PATENT Enron.

GEORGE L. MOGREGOR, OF CHICAGO, ILLINOIS.

BOlLER-LUG AND METHOD OF MAKING THE SAME.

SPECIFICATION forming part of Letters Patent No. 479,331, dated July 19,1892.

Application filed December 14, 1891- Serial No. 414,989. (No model.) I

To aZZ whom it may concern.-

Be it known that I, GEORGE L. MoGREooR, a citizen of the United States,residing at Ohicago, Illinois, have invented a new and usefulImprovement in Boiler-Lugs and Methods of Making the Same, of which thefollowing is a specification.

As is well known these lugs or brackets are used in connection withboilers to support them in various places in which they may be used. Asheretofore constructed they have been made by casting, which has beenobjectionable and unsatisfactory, because lugs so formed have not beendurable and have been liable to break, and, furthermore, it has beendifficult to obtain as nice a fit with these lugs as is desirable, sinceone member of the lug is preferably curved to fit the boiler and theother left fiat to rest upon the masonry or other support. My object isto avoid these defects, and I accomplish this by forming my lug out of asingle piece of wrought-iron or steel at a single heating; and myinvention consists in the method, features, and details of constructionhereinafter described and claimed.

In the drawings, Figure 1 is a plan View of the metal blank from whichthe lug is made; Fig. 2, a perspective front view of the completed lug;and Fig. 3, a perspective rear view of such lug, its position beingreversed.

A is a metal blank; a, holes therein; B, the completed lug, and O thestrengthening-web thereof.

In making my improved lug or bracket I first make a blank A of anysuitable material, as wrought-iron or steel, and of any desireddimensions, depending upon the size of the lug to be made. This blank ispassed through suitable rolls to form the web or rib O, which preferablyruns substantially along the middle of the blank. This webbed blank maybe of any desired length, either, as shown in Fig. l, of the requisitelength to form one lug, or it may be first made longer and afterward cutinto pieces of the desired length, the length of the blank beingimmaterial.

In further describing my method I shall use the word blank as meaningeither the one made of the proper length in the first place or one ofthe pieces formed by dividing the preferred, and also in this case theweb may be made of greater height near the middle of the blank, so as toincrease its width at the angle when the blank is bent. The bending willany way tend to increase the width of the web at the angle, thusstrengthening the lug at its weakest point, and if the web is made widerat this point in the first place this will aid in giving additionalstrength. The blank being properly bent, holes a are drilled orpunctured in the member 13' to admit the fastening-rivets. Of course, ifdesired, these holes can be made before the blank is bent as well asafterward.

In applying this device the member B is fastened to the boiler byriveting or by any other suitable means, and the member B rests upon oris embedded in the brickwork or other support. By this means I provide alug which is highly efficient in operation and exceedingly simple'andcheap in construction. As above indicated, the lug can be made from theblank in one continuous operation, or, if preferred, the Webbed blankcan be made first and then cut, bent, and drilled to form the lugs whendesired.

I claim- 1. The improvement in the art of manufacturingboiler lugs orbrackets, which consists in forming a metal blank, rolling such blank toform a web, and bending the blank to form the completed lug,substantially as described.

2. The improvement in the art of manufacturing boiler lugs or brackets,which consists in forming a metal blank, rolling the blank to form a webalong the middle thereof, cutting the blank to the desired lengths, andbending the pieces so formed to make the completed lugs, substantiallyas described.

3. The improvement in the art of manufacturing boiler lugs or brackets,which consists member to be attached to the boiler and a. flat member torest upon the boiler-support, substantially as described.

GEORGE L. MCGREGOR.

Witnesses:

GEORGE S. PAYSON, ANNIE C. COURTENAY.

